 But that creates problems. So we don't use beta blockers much. I mean, they are used in some instances as a governor for the heart, but it's not first choice because guess what? They make you tired. So we deal with resistance, and we lower the resistance in the system. Okay, you can do that centrally or peripherally. Centrally, meaning we work on the brain. So clonidine works from the brain. It actually has a center that will send signals and cause a...